NEW
Font size
WorksheetsEXAM
Total questions: 80
Worksheet time: 40mins
Which of the below will not develop pitching moment?
A symmetrical airfoil set at positive AOA
A camber airfoil that is not developing lift
A camber airfoil set at zero AOA
A camber airfoil that is producing lift
An airplane is making a constant airspeed, level turn. It's velocity
is increasing.
is decreasing.
remains the same.
is changing.
Airfoil camber is defined as
the maximum thickness of the airfoil
the maximum distance between the camber line and the chord line
the percentage of the mean camber line
ratio of the thickness to chord
Which control surface produces large amount of drag without affecting other lift producing surfaces of the aircraft?
Spoilers
Speedbrakes
Slats
Flaps
The elevator is commonly installed onto the
leading edge of horizontal stabilizer
trailing edge of the horizontal stabilizer
tip of the mainplane
inboard of the mainplane
In longitudinal control,
the elevator controls pitch about the lateral axis
the aileron control roll about the longitudinal axis
the rudder control direction about the yaw axis
the aileron control pitch about the lateral axis
The maximum distance between the mean camber line and the chord line is the
mean camber
mean camber line
maximum camber
maximum chord
To compensate for nose down tendency the
flaps are set at positive AOA
elevators are set at positive AOA
elevators are set at negative AOA
horizontal stabilisers are set at negative AOA
The coefficient of drag can be defined as:
the ratio of lift forces to drag forces
the measure of the efficiency of the airplane
the ratio of drag forces to lift forces
the ratio of drag pressure to dynamic pressure
The speed of sound depends on
air density alone
pressure and density
temperature alone
density, temperature and viscosity
Induced drag results from the lift vector being tilted to the rear. This is caused by:
the wing tip vortices cause downwash behind the wing
the relative wind behind the wing is pushed downwards
the local relative wind at the AC is depressed
all choices the mentioned here.
Calculate the pressure if 16 lbs force is being applied to a piston in a cylinder given the area of the piston is 4 inches squared
32 psi
64 psi
16 psi
4 psi
Mil-H-83282 belongs to what type of fluid and what is the colour?
mineral, violet
mineral, red
synthetic, violet
synthetic, red
The disadvantage of using gas to transmit forces is that
it is compressible
it is lighter
it takes up more space
it is flammable
What is the purpose of pressurising the reservoir?
Prevent foaming and evaporation
Endsure positive supply of fluid at high altitude only.
Allow expansion of fluid under high temperature.
In case of pump failure, the pressure in the reservoir will supply the fluid pressure.
The advantage of a variable displacement pump is that
direction of pump rotation can vary
flow of hydraulic fluid can be regulated
various type of pump can be installed in a same hydraulic system
it is interchangeable between aircraft types
If there is excessive pressure in the reservoir, where does it relief to?
Hydraulic fluid relief through reservoir relief valve to the ambient
Hydraulic fluid relief through manual bleed valve to the ambient
Hydraulic fluid relief through system relief valve back to the reservoir
Hydraulic fluid relief through manual bleed valve back to the reservoir
Excess fluid pressure relieved by system relief valve is diverted to
supply line
return line
atmosphere
bypass valve
Excessive air load on the wing flap is diverted to return-line by
thermal relief valve
blow-back relief valve
system relief valve
check valve
Which is not a correct servicing procedures?
Flush out the new pipelines with different type of hydraulic fluid
Blank off the disconnected pipes
Make sure all components are cleaned before installation
Use a proper tray to hold the components
If the caution light in the cockpit remains on, what is the causes?
insufficient fluid in the reservoir
system pressure too high
air in the system
pressure switch stuck opne
Choose a most suitable actuator to operate 2 mechanisms simultaneously
single-action
3-port
double-action
triple-action
Fitting is used to
close a hole in a line
link up the lines between the hydraulic components
join the return lines to the reservoir
pressurise the joint between pipelines
What is the effect of low humidity in the aircraft?
Fog appear in cabin
Decrease cabin temperature
Prevent freezing of aircraft parts
De-pressurisation in cabin
Where does the air conditioning system begin?
At the flow control valve
At the temperature control valve
At aircon unit outlet
When the air enters the cabin
In the cabin pressurisation system which component controls the rate of discharge of the cabin air into the atmosphere?
Cold air unit
Flow control valve
Cabin pressure regulator
Temperature control valve
Which components control the chamber pressure up to 10 000 feet?
The outflow valve and differential bellow
Differential bellow and needle valve
Cabin air bleed orifice and filter
Isobaric bellow and needle valve
Climbing from 10 000ft to 30 000ft, the pressure differential in a military aircraft will
be maintained constant
increase with altitude
decrease with altitude
increase of decrease depending on pilot selection
Which of the following is correct about the constant differential pressure?
When the maximum differential pressure is reached, the cabin altitude increases at the same rate as aircraft altitude.
When the maximum differential pressure is reached, the cabin altitude decreases at same rate as aircraft altitude
When the aircraft altitude increases, the cabin altitude decreases
When the aircraft altitude decreases, the cabin altitude increases.
Which one of the following is NOT an effect of ice formation on an aircraft?
Hamper's pilot vision
Increases the drag on the aircraft
Causes stalling of the engine compressor
Causes failure of cabin pressurisation and air-conditioning of the aircraft.
Which of the following methods may be used to prevent or control ice formation on an aircraft?
Using fluid spray.
Using vortex generator
Heating by thermocouples
Using ram air to away the ice
In the anti-icing system, what is the principle used in the thermal type?
Hot air.
De-icing fluid.
Inflatable boots.
Electrical elements.
Which of the following is the correct heater mat used in propeller anti-icing system?
A layer of heating element molded to a layer of insulating rubber
Two layers of heating element sandwiching a layer of insulating rubber
Two layers of insulating rubber sandwiching a layer of heating element.
A layer of heating rubber molded into a layer of insulating element
Which two factors control the temperature of heating element in an electrical heating anti-icing system?
Electrical power and bleed air supply
Cooling condition and electrical power
Cooling condition and location of heating element
Bleed air supply and location of heating element
How is ice formed on aircraft?
Ice in clouds sticks to the aircraft and makes an ice layer that is equally thick over the whole aircraft.
When super-cooled water droplets hits the surfaces of the aircraft, changes to solid.
Aircraft take off when wet, the water form into ice due to low temperatures
Ice is formed when rain hits the surfaces of the aircraft.
Which of the following method is recommended for inspecting the surfaces of a cable for broken wires?
Run a small magnet over the cable. The broken wires will exposed itself
Run a rag over the cable, back and forth for any catching with the cable experienced
Bend the cable
Bend the cable and inspected with a magnifying glass
What is the maximum deflection allowed on a cable fairleed?
4 degrees
3 degrees
5 degrees
6 degrees
Name one advantage of a push-pull rod system over a cable system?
It is lighter
It comes in larger in diameter size
It is less affected by temperature change
It has less mechanical play
You have an aluminium alloy sheet with series number beginning with 6, what main alloying metal would that be?
Copper
Zinc
Manganese
Magnesium and Silicon
The core material of Alclad 2024-T4 is
heated-treated aluminium alloy, and the surfaces material is commercially pure aluminium
commercially pure aluminium, and the surface material is heat-treated aluminium alloy
strained-hardened aluminium alloy, and the surfaces materials is commercially pure aluminium
strained-hardened aluminium alloy, and the surfaces materials is heat-treated aluminium alloy
During which phase of flight do aircraft structures suffer the greatest amount of fatigue?
Take off and landing
Straight and level flying
Slow descent
Taxying
When computing weight and balance, an aircraft is considered to be in balance when
all moment arms of the plane fall within the CG range
The movement of passengers will not cause the moment arms to fall outside the CG range
The movement of the fuel will not cause the moment arms to fall outside the CG range
The average moment arm of the loaded airplane falls within it's CG range
When using a coloured dye penetrant what colour would the faults appear?
Red
Green
White
Yellow
A structure that made use of it's outer skin for strength is called
Tension skin construction
Stress skin construction
Semi-monocoque construction
Monocoque construction
When the aircraft is on jack, it mainplanes experience
Bending stress
Compression stress
Tension Stress
Torsion Stress
Which of the following fabric is noted for being flexible?
Kevlar
Boron
Glass
Carbon
In the process of weighing an airplane towards obtaining the CG, the arms from the weighing points always extend
parallel to the centreline of the airplane
straight forward from each of the landing gear
directly from each weighing point to the others
parallel to the chord line of the wing
What is meant by the flash point of fuel?
The flash point of fuel is the lowest temperature at which the fuel starts to vaporise completely
the flash point of the fuel is the lowest at which fuel creates just enough vapour to become flammable
the flash point of fuel is the lowest at which fuel ignites without an external flame
the flash point is the highest temperature which can be reached is a fuel/air mixture is burned
What is unique about the FSII element?
improve fuel/air mixture
increased fuel flow to the engine
increase the flashpoint of fuel
lower freezing point of fuel
JP5 fuel is safer than other types of fuel as
the flash point is lower
the flash point is higher
the freezing point is higher
the freezing point is lower
In a water scavenge system, the method used to suck out the water from the tank is
venturi effect
suction
pumping
vacuum
The respective tank switches in the control panel during refuelling is used to control
refuelling coupling
refuelling valve
refuelling pump
refuelling manifold
If the fuel pressure warning light illuminate
it shows normal fuel pressure
the fuel pressure in the manifold is high
fuel quantity is low
the fuel boost pump is not switched on
Which element is not part of the basic fuel quantity indicating system?
Tank units
Amplifier
Indicator
Induction Motor
The fuel quantity probes in the tank are installed
horizontally and in different length
horizontally and in equal length
vertically and in different length
vertically and in equal length
What is the most important principle to consider in winter survival
protection from wind and cold
be located by rescuers
water rationing
food rationing
Name 2 of the items can be found in the Personal Survival Packs (PSP)?
salt tablets and strobe light
flu tablets and strobe light
salt tablets and lamb
salt tablets and stroke light
What is the purpose of Floating Knife fitted on the life raft
to cut the rescue line
to cut the water pocket
to cut the life raft painter cord and entangled cordage
to cut life rift valves
Life rafts are generally inflated by
Oxygen gas
Nitrogen gas
Carbon dioxide gas
compressed air
Which part of the parachute is strong and contain some elasticity and it absorb much of the shock load?
Parachute pack
Pilot chute, canopy, suspension lines, pack and harness
Suspension Lines
Canopy
Which component is designed to operate within 2 seconds after being immersed in seawater
SEAWARS (Seawater Artificial Release System)
SEAWARS (Seawater Activated Release System)
UWARS
(Universal Water Activated Release System)
UWARS
(Universal Water Artificial Release System)
The Anti-G suit gives protection against the effect of G-forces by
applying counter-pressure to the abdomen, thighs and legs
applying counter-pressure to the head, thighs and legs
applying counter-pressure to the abdomen and head
applying counter-pressure to the abdomen, thighs and arms
The air supply to the Anti-G suit is automatically controlled by
oxygen valve
inflation valve
Anti-G valve
inlet and inflation valve, relief and safety topping-up valve, deflation plug
Which of the following is NOT a characteristic of oxygen
Combustible
Support combustion
Odorless
Tasteless
What happens to the combination valves when the servicing hose of the LOX cart is connected to the fill port?
build-up port is closed and the gas port is opened to vent
build-up port is closed and fill port is opened to vent
both build-up port and fill port are opened to vent
both fill and gas ports are closed
The pressure closing valves is shut when the LOX converter pressure is
below 75 psi
above 75 psi
above 110 psi
above 210 psi
The heat exchanger in the LOX system
extract heat from the oxygen so that it is cooler for the aircrew to inhale
helps to cool the oxygen as it flows to the regulator
cools the return
ensures that liquid oxygen is fully converted to gaseous oxygen suitable for breathing
Which is the correct tool for separating the vent and supply hoses from the LOX converter system
multi-grip
vise-grip
approved spanner or wrench
by hand
When the blinker on the oxygen regulator panel is
white, it means that oxygen is flowing
amber, LOX level is low
red, system is over pressure
black, oxygen filter is clogged
The OBOGS oxygen concentrator compromises molecular sieve bed, coalescing filter, rotary valve and
oxygen monitor
oxygen regulator
plenum assembly
backup supply
The hazards involved in handling liquid oxygen are
pressure explosion, freezing and corrosion
fire and explosion, pressure explosion and freezing
fire and explosion, pressure explosion and corrosion
fire and explosion, pressure explosion and high levels of heat
Excessive shoulder wear is caused by
locked or non-rotating wheel on a dry runway
landing on a grooved runway
under inflation of tires
over inflation of tires
The function of the master cylinder is to
produce braking pressure
build-up pressure to control the brake metering valve
give artificial feel on the steering system
standby as backup for emergency use
What pushes the lock links over centre against the drag links point to ensure a positive down lock on the main undercarriage?
safety pin
downlock sensors
downlock springs
aircraft weight
What is the function of the torque link?
allow the inner cylinder to rotate and to move up and down in the outer cylinder
allow the inner cylinder to move up and down in the outer cylinder but not to rotate
prevent vibration build-up in the landing gear during take off and landing
give improved steering capabilities when taxiing or narrow curves
Normal slippery action on a thin film of water is
viscous hydroplaning
dynamic hydroplaning
static hydroplaning
reverted rubber hydroplaning
What will happen if the micro-switches in the landing gear indicating system is not properly rigged?
Every system will still continue to function normally
The brake system on the landing gear will not be able to function
The indicting system will not display the correct status of the landing gear
The indicating system will be totally unserviceable (no indication at all)
When the landing hear position indication system is not displaying the correct status of the landing gear for the right main gear indicator, what could be the fault?
The indication bulb is blown.
There is no electrical power to the landing gear position system
There is no hydraulic power to the landing gear position system
The micro-switches are not properly rigged.
Which are the electrical components in the nose wheel steering system?
i. control unit
ii. feedback potentiometer
iii. command potentiometer
iv. steering amplifier
i, ii & iii
ii, iii & iv
i, iii & iv
i, ii & iv
If the right wing of a monoplane is improperly rigged to a greater angle of incidence than designated in the manufacturer's specifications, it will cause the
airplane to be off balance both laterally and directionally
right wing to have both an increased lift and a decreased drag
airplane to pitch and roll about the lateral axis
right wing will have decrease in lift and drag
